package com.wzh.mall.member.exception;

/**
 * @program: mall
 * @description: 用户名已经存在的异常
 * @author: Mr.Wang
 * @create: 2021-09-16 12:20
 **/
public class UsernameExistException extends RuntimeException {

    public UsernameExistException() {
        super("用户名已经存在。。。");
    }
}
